Performed by: Janácek Philharmonic; Petr Kotik, conductor; Thomas Buckner, baritone; Muhal Richard Abrams, piano; Roscoe Mitchell, saxophone. "Spectrum features an improvised performance by Muhal Richard Abrams and Roscoe Mitchell entitled 'Romu.' This recording is also the first to feature Abrams's and Mitchell's work with orchestral forces. Mutable Music is very proud to be able to offer these premiere recordings. Abrams's 'Mergertone' was commissioned by the Ostrava Center for New Music and premiered at the opening concert of the Ostrava Days 2007 festival by the Janåcek Philharmonic, Petr Kotik conductor. Mitchell's 'Non-Cognitive Aspects of the City' was commissioned by Mutable Music for baritone Thomas Buckner, Petr Kotik and The Orchestra of the S.E.M. Ensemble and was premiered at the Willow Place Auditorium in February 2003."